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Abstract

A soft visual transition from one image still frame to another is accomplished on an AC plasma display device by fading out one image simultaneous with the appearance of the next image so that the images are blended during transition. The figure illustrates in block schematic form a transition system for changing image data originating from an image data source, such as a videodisc player, into a form suitable for display on a plasma panel. The video image is converted to halftone digital form by an analog-to-digital converter designated A/D Halftone Process 3. The A/D halftone process in block 3 is described in detail in the IBM Technical Disclosure Bulletin 22, 166-167 (June 1979).

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United States

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English (United States)

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Image Blend/ Dissolve On Plasma Displays

A soft visual transition from one image still frame to another is accomplished
on an AC plasma display device by fading out one image simultaneous with the
appearance of the next image so that the images are blended during transition.
The figure illustrates in block schematic form a transition system for changing
image data originating from an image data source, such as a videodisc player,
into a form suitable for display on a plasma panel. The video image is converted
to halftone digital form by an analog-to-digital converter designated A/D Halftone
Process 3. The A/D halftone process in block 3 is described in detail in the IBM
Technical Disclosure Bulletin 22, 166-167 (June 1979). The digital output from
A/D converter 3 is then applied through odd-even filter logic 5 to provide the
necessary independent control for the odd and even drivers for a plasma display
7 which uses one driver per line.

Independent control is provided and maintained over odd and even "X" and
"Y" write/erase drivers in the plasma display logic by two control bits 9, 11 and an
invoke/disable switch 13. Control of the odd and even drivers is provided by odd-
even filter logic 5 which operates in the following sequence. First, all the odd
pels (picture elements) in the first odd line are erased and replaced with the new
image odd pels and repeated sequentially for all odd lines. The same sequence
is then used with the even pels and even lines. Finall...